tif.h

本光盘包含了《精通Visual C++图像处理编程(第3版)》一书中全部的源代码、示例程序的可执行文件以及一些供图像处理测试用的图像文件。

// Tif.h: interface for the CTif class.
//
//////////////////////////////////////////////////////////////////////

#if !defined(AFX_TIF_H__48A36A64_0A10_11D3_9481_000021003EA5__INCLUDED_)
#define AFX_TIF_H__48A36A64_0A10_11D3_9481_000021003EA5__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

#include <math.h>
#ifdef __cplusplus
	extern "C" {
#endif // __cplusplus

#include "tiffiop.h"

#ifdef __cplusplus
	}
#endif // __cplusplus

#include "Dib.h"


#define CVT(x)			(((x) * 255L) / ((1L<<16)-1))
#define	SCALE(x)		(((x)*((1L<<16)-1))/255)
#define CalculateLine(width,bitdepth)	(((width * bitdepth) + 7) / 8)
#define CalculatePitch(line)	(line + 3 & ~3)

// needed for png & gif
struct rgb_color_struct { BYTE r,g,b; };
// needed for png & mng
#define COLORTYPE_PALETTE	1
#define COLORTYPE_COLOR		2
#define COLORTYPE_ALPHA		4

#define RGB2GRAY(r,g,b) ((b*11 + g*59 + r*30)/100) //color to grey mapping


typedef struct tagQTImageInfo {
  DWORD   dwEffWidth;           // DWORD aligned scan line width
  BYTE *  pImage;               // THE IMAGE BITS
  void*   pGhost;               // if this is a ghost, pGhost point to the body
  long    nFrame;        
  long    nNumFrames;       
  RECT    rSelectionBox;        // bounding rectangle
  BYTE    nAlphaMax;            // max opacity (fade)
  BYTE    bAlphaPaletteEnabled; // true if alpha values in the palette are enabled.
	BYTE	  bColorType;			      
  long    xDPI;                 // horizontal resolution
  long    yDPI;                 // vertical resolution
  long    xOffset;
  long    yOffset;
} QT_IMAGE_INFO;

typedef struct tagQT_COLOR_MAP
{
  DWORD red;
  DWORD green;
  DWORD blue;
} QT_COLOR_MAP;

class CTif  
{
public:
	CTif();
	CTif(CDib *pDib);
	virtual ~CTif();

// function
public:
	// Get CDib
	CDib * GetDib()
	{
		return m_pDibObject;
	}
	//Set CDib
	BOOL SetDib(CDib *pDib)
	{
		if (pDib == NULL)
			return FALSE;

		if (m_pDibObject != NULL)
			delete m_pDibObject;

		m_pDibObject = pDib->Clone();

		return (m_pDibObject != NULL);
	}
	// Load TIFF file
	BOOL Load(LPCSTR lpstrFileName);
	// Save PCX file
	BOOL Save(LPCTSTR lpstrFileName, CDib* pDib = NULL);

	long pagecount();
	int isFax();

private:
	// attributes
	CDib*	m_pDibObject;

	BOOL open( char* szTiff, char * szMode );
	void close();
	void setpage( long a_lPage ) { TIFFSetDirectory(m_tif,(unsigned short)a_lPage); getdata(); m_lPage = a_lPage; }
	long page() { return m_lPage; }
	void getdata();
	BOOL DecompressImage();
	void * Create( DWORD a_dwWidth, DWORD a_dwHeight, long a_wBpp );
	void SetPaletteIndex( BYTE idx, BYTE r, BYTE g, BYTE b, BYTE alpha );

	int FillColorMap( QT_COLOR_MAP * a_in );
	TIFF * m_tif;
	UINT height;
	UINT width;
	unsigned short bitspersample;
	unsigned short samplesperpixel;
	UINT rowsperstrip;
	unsigned short photometric;
	unsigned short compression;
	unsigned short orientation;
	UINT x, y;
	float x_resolution;
	float y_resolution;
	float x_offset;
	float y_offset;

	FILE hFile;  // file handle to read the image

	long m_lPageCount;
	long m_lPage;
	BOOL m_bIsRGB;

	QT_IMAGE_INFO       m_info;
	BITMAPINFOHEADER    m_head; 
	BYTE  *             m_pbSelection;  // selected region
	BYTE  *             m_pbAlpha;      // alpha channel
	void  *             m_pDib;         // contains the header, the palette, the pixels
};

#endif // !defined(AFX_TIF_H__48A36A64_0A10_11D3_9481_000021003EA5__INCLUDED_)